The alimentary canal is used when food enters the body and solid wastes are expelled out. So, when you eat or drink something the alimentary canal brings in down through it's canal and your digestive system "digests it", which then causes the alimentary canal to let solid wastes be brought out. The alimentary canal consists of the mouth, pharynx, esophagus, stomach, small and large intestine, and the anus.
Hope that makes sense...
The most important property of the cell membrane<span> is its selective permeability: </span>some substances<span> can </span>pass through<span> it freely, but others cannot. Small and nonpolar (hydrophobic) molecules can freely </span>pass through<span> the </span>membrane<span>, but charged ions and large molecules such as proteins and sugars are barred passage. </span>
<span>The following are the energy systems that the body would use to provide a person with energy throughout a race:
>ATP-PC-high power, short duration,
ATP-PC system can make energy at about 36 calories minute.
>Glycolytic-moderate power/short duration
can produce energy at about 16 calories per minute.
> Oxidative-low power/long duration.
creates 10 calories per minute, approximately.</span>
<span>During meiosis, homologous chromosomes can exchange DNA in a process known as : Crossing over
Crossing over is one of the final phase of genetic recombination, which happen in Meiosis during a process called Synapsis. It occurs when matching part of matching chromosomes broke and reconnect with other chromosomes
I hope that my answer is helpful! Let me know if you need something more :)</span>
